2x-21=0.5(x+13)

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Solution for 2x-21=0.5(x+13) equation: 



2x-21=0.5(x+13)

We move all terms to the left:

2x-21-(0.5(x+13))=0



We calculate terms in parentheses: -(0.5(x+13)), so:

0.5(x+13)

We multiply parentheses

0.5x+6.5

Back to the equation:

-(0.5x+6.5)



We get rid of parentheses

2x-0.5x-6.5-21=0

We add all the numbers together, and all the variables

1.5x-27.5=0

We move all terms containing x to the left, all other terms to the right

1.5x=27.5

x=27.5/1.5

x=18+0.5/1.5

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